You asked us a question. "How much stuff is in orbit around the Earth. And is it dangerous?"
NASA tracks some half a million pieces of space junk. They track everything. They track bits of out-of-date satellites. They even track the rare lost glove or spatula.
The United States Department of Defense tracks everything larger than a softball. There are about 20,000 objects.
Why? Because a piece of space junk that size is moving fast. It is moving at about 10 times the speed of a bullet. It will hit you with the power of 25 sticks of dynamite.
It is worse when space junk runs into other space junk. It does not just fall into earth's atmosphere and burn up.
It becomes millions of little missiles. They race around the earth. That is instead of two big ones.
Thank goodness we can always count on a little help from our friends.
One example is the Chinese. In 2007, they decided to show off their fancy new anti-satellite missile system. They blew up an old weather satellite. It added another 3,000 pieces of killer junk to the problem.
There is an upside. Our mates in Australia are working on a laser. It will zap space junk out of orbit.